2 messages in net.nether.puck.cisco-nsp[c-nsp] BGP Attributes in iBGP
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Prit PatelJan 3, 2005 1:56 am 
Oliver Boehmer (oboehmer)Jan 3, 2005 2:18 am 
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Subject:[c-nsp] BGP Attributes in iBGPActions...
From:Oliver Boehmer (oboehmer) (oboe@cisco.com)
Date:Jan 3, 2005 2:18:42 am
List:net.nether.puck.cisco-nsp

Can we use BGP attributes like loca-pref and weight and MED etc for doing load-balancing between multiple link to same destination in iBGP.

Well, all BGP attributes play a role in iBGP path selection. To use multiple iBGP paths for load-sharing, you need to enable iBGP multipath. See http://www.cisco.com/warp/public/459/25.shtml for details.

IF we use this does it created any extra overhead on the router/network ?

There is no packet performance penalty (assuming you use CEF). Since the router needs to store more data in the FIB (aka CEF table), you will need more memory to store the FIB.

oli